Malicious PDF — malware analysis report

Static analysis result for SHA-256 c43a982972983071…

MALICIOUS

PDF

73.1 KB Created: 2021-04-08 09:36:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f9cfbfe6fc10b6b6c1f18c96087fc83f SHA-1: a3e2928137338bc8bacea1b1653a23261fc4145e SHA-256: c43a982972983071752142746aa110496a82838e1c5cef809ca50ebf0a6efdf3
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains an embedded URI pointing to 'xezojetit.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to a service manual, aligning with common social engineering tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://xezojetit.ru/123?utm_term=takeuchi+tl12r2+service+manual
    • https://cdn-cms.f-static.net/uploads/4450428/normal_601f39df98fb2.pdf
    • https://cdn-cms.f-static.net/uploads/4402246/normal_601a82c881157.pdf
    • https://static.s123-cdn-static.com/uploads/4401703/normal_5fcccd8794088.pdf
    • https://wowobomufib.weebly.com/uploads/1/3/0/8/130874304/nuzipixowisifodopup.pdf
    • https://cdn-cms.f-static.net/uploads/4495999/normal_600b63283da5f.pdf
    • http://zasijeg.iblogger.org/fugib.pdf
    • http://kumululurug.scienceontheweb.net/jopojotomufiwepakes.pdf
    • https://cdn-cms.f-static.net/uploads/4460247/normal_602badd042fd9.pdf
    • https://lilepixot.weebly.com/uploads/1/3/4/4/134462463/xukovex_ximux_koxemuwu.pdf
    • http://vitodibiwanezej.mypressonline.com/a_christmas_carol_novella_study_guide_answers.pdf
    • https://static.s123-cdn-static.com/uploads/4460241/normal_5ffbc7386b6f8.pdf
    • https://static.s123-cdn-static.com/uploads/4380079/normal_60052d3eb7b6f.pdf
    • http://ledojekukifal.iblogger.org/pdf_editor_delete_text_online.pdf
    • http://winoxolupuvil.getenjoyment.net/zumatep.pdf
    • https://cdn-cms.f-static.net/uploads/4405929/normal_602be2872b22c.pdf
    • https://xogosafaxisomig.weebly.com/uploads/1/3/0/7/130739024/9ff2e.pdf
    • https://togawikanow.weebly.com/uploads/1/3/5/3/135320583/6857909.pdf
    • https://static.s123-cdn-static.com/uploads/4459630/normal_6002c2905bf65.pdf
    • https://popupobapovuzus.weebly.com/uploads/1/3/4/0/134012290/1932017.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/paxuvagal/schaums_outline_of_differential_equations_4th_edition_free.pdf
    • https://s3.amazonaws.com/rikolesafuwofar/allure_report_maven.pdf
    • http://gemovimuwopete.atwebpages.com/nerasizukudojafawisepoto.pdf
    • http://vazefetapo.rf.gd/jusubofonulox.pdf
    • http://nukisiboviwal.epizy.com/abscisa_concepto.pdf
    • http://zagaturatok.epizy.com/1950841535.pdf
    • http://wenulusevikofa.myartsonline.com/botaxozijerina.pdf
    • https://s3.amazonaws.com/dinisemowoge/25638580363.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e0d5.bin
6e177e6c53fc8705b57184fef58594ceff870f6868250c799fe99cd3ff457ac0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE0D5 5296 bytes
font_01_sfnt_off0000f2bd.bin
072d134c7fcbd5e75dcd39c5a8485c40bb018bb3130661b47c71eb9f31cd26a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF2BD 10624 bytes

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